Trumpet for use in textile industry



NOV. 17, 1953 BRADLEY 2,659,108

TRUMPET FOR USE IN TEXTILE INDUSTRY Filed 001;. 24. 1949 INVENTOR. JOHNJ. amqazar ML MvPPfiM Patented Nov. 17, 1953 TRUMPET FOR USE IN TEXTILEINDUSTRY John J. Bradley, Grosse Pointe, Mich, assignor to The GearGrinding Machine Company, Detroit, Mich., a corporation of MichiganApplication October 24, 1949, Serial No. 123,150

2 Claims.

The invention relates to the so-called trumpets used in the textileindustry and functioning to condense a thin wide ribbon of fibers into adense cohesive sliver of circular cross section.

It is the object of the invention to obtain a construction which is veryexact as to size, has great durability and can be replaced whennecessary without change in the associated parts of the structure.

It is a further object to obtain a construction the appearance of whichis indicative of the size.

With these objects in view the invention con sists in the constructionas hereinafter set forth.

In the drawings:

Figure 1 is a section of my improved trumpet in an axial plane thereof;

Figure 2 is an elevation of the mouth end thereof.

A trumpet for use in the textile industry is formed with a conicalflaring mouth and with a cylindrical extension from the small end of thecone, which is of the exact internal diameter required for forming aparticular sliver. In use trumpets become Worn so that the dimension ofthe cylindrical portion is enlarged and is no longer suitable for theparticular work. It must therefore be replaced, and the discarded partis no longer useful for any purpose. My improved construction of trumpetis provided with a replaceable lining, which is formed of more durablematerial than that from which trumpets are usually constructed.Furthermore, the lining is die-fashioned so as to be of the exactdimension desired. However, if wear should occur, the lining is easilydetached and replaced without change in the other portion of thestructure. As illustrated, A is a member of generally trumpet form butof larger internal dimensions than suitable for a particular use as atrumpet. B is a liner preferably formed of a molded or die-fashionedplastic material such, for instance, as nylon. This liner is insertablewithin the member A and is frictionally secured thereto, preferably byforming both members with corresponding tapered engaging surfaces C andD. The liner has a conical mouth portion E and a cylindrical portion Pwhich is of the exact internal diameter required for the forming of aparticular sliver. The mouth portion E has a radially outwardlyextending flange portion G, which coves the end of the member A toprotect the same. The member A has an annular external groove H forfitting the supporting frame (not shown).

With the construction just described, the liner is more durable thanmost trumpet constructions, particularly if they are formed of metal.Also, as the liner is die-fashioned, it will always be of the exact sizerequired. Liners having different dimensions in the portions F thereofmay be used with a standard construction of the memher A and, whenevernecessary, the liner can be easily removed and replaced by another.

As trumpets are made in various sizes, which can not be easilydistinguished from each other except by calibration, it is advantageousto form my improved liner so as to be visually indicative of its exactsize. This I preferably accomplish by coloring the liner, a particularcolor designating a particular size. Thus where replacements arenecessary, the proper liner may be easily selected from the stock by itscolor. Should the liner become worn, it can be replaced by pressingagainst the small end of the taper which will disengage it from themember A. A replacement may then be inserted in said member.

Some of the advantages of my improved construction are:

1. Longer life (approximately 4-6 to 1).

2. It is considerably cheaper to produce and eliminates all sizingoperations.

3. It is cheaper and easier to replace when the orifice wears beyondspecified size.

4. It is cheaper and easier to stock standard sizes.

5. Identifies a specific size by appearance, such as a particular color.

6. The liner is frictionally interlocked with the supporting body so asto be easily detachable and replaceable.

I claim:

1. A textile trumpet comprising a stress carrying body portion ofgenerally trumpet form for permanent installation in a textile machineand an exchangeable liner formed of die-fashioned plastic material, saidliner being of exactly predetermined internal and external form anddimensions and fitting within said body portion to be frictionally heldthereto also completely covering the inner face of said body portion andextending over the large end thereof.

2. The construction as in claim 1 in which said liner has a portion atits small end which is of but slight taper externally to fit acorresponding taper in the body portion and to be frictionally heldthereby.

JOHN J. BRADLEY.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,675,556 Howie July 3, 1928 1,917,699 Casablancas July 11,1933 1,956,338 Bartling Apr. 24, 1934 2,060,964 Wider Nov. 17, 19362,076,751 Thierfelder Apr. 13, 1937 2,206,232 Martin July 2, 19402,320,591 Haley June 1, 1943 FOREIGN PATENTS Number Country Date 222,775Switzerland Oct. 15, 1942

